table.listing .center{
    text-align:center;
    vertical-align: middle;
}
table.listing th{
    text-align:center;
}
.mytooltip-alert{
    display:none;
    position: absolute;
    background: url(http://www.tinhte.vn/rgba.php?r=0&g=0&b=0&a=153);
    background: rgba(0, 0, 0, 0.6);
    _filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#99000000,endColorstr=#99000000);
    padding: 5px 10px;
    border-radius: 5px;
    top:0;left:480px;
    color: #fff;
}
.reloadTab:hover{
    cursor:pointer;
}